| 1. |
- Enberg, Cecilia, et al.
(författare)
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Knowledge Integration in Inter-firm R&D Collaboration : How do Firms Manage Problems of Coordination and Cooperation?
- 2011
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Ingår i: Knowledge Integration and Innovation: Critical Challenges Facing International Technology-Based Firms. - Oxford : Oxford University Press. - 9780191730580 - 9780199693924 ; , s. 149-169
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Bokkapitel (övrigt vetenskapligt/konstnärligt)abstract
- Firms often need to collaboratively use and integrate two or more organizations' knowledge bases in order to achieve their goals. This is a challenging task due to two sets of commonly identified problems: ‘problems of coordination’ that derive from knowledge contingencies, and ‘problems of cooperation’ that derive from relationship factors. While literature often treats these problems independently, this chapter focuses on how they can be modelled jointly within a framework grounded in knowledge-based and transaction cost approaches to the firm. The findings from a case study of three inter-firm R&D collaborations suggest that treating both problems as interdependent, rather than isolated, can provide a better account for the challenges and structure of inter-firm R&D collaborations. The results imply that neither firms nor research should focus too much on either of the problems at the expense of the other.
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| 2. |
- Joost, de Moor, et al.
(författare)
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Sweden
- 2019
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Ingår i: Protest for a future: : Composition, mobilization and motives of the participants in Fridays For Future climate protests on 15 March, 2019 in 13 European cities - Composition, mobilization and motives of the participants in Fridays For Future climate protests on 15 March, 2019 in 13 European cities. ; , s. 19-31
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Bokkapitel (övrigt vetenskapligt/konstnärligt)abstract
- The #FridaysForFuture climate protests mobilized more than 1.6 million people around the globe in March 2019. Through a school strike, a new generation has been galvanized, representing a historical turn in climate activism. This wave of climate protest mobilization is unique in its tactics, global scope and appeal to teenage school students. Media coverage of these protests and high-level national and international political meetings involving the movement’s icon, Greta Thunberg, illustrate a level of global attention that no previous youth movement has ever received.A team of social scientists from universities across Europe1 organized a survey of the global FFF strike events on March 15. The team surveyed protesters in 13 cities in nine European countries using the same research design to collect data, following the well-established protest survey methodology used previously in the “Caught in the Act of Protest: Contextualizing Contestation” (CCC) project.The significant presence of young first-timers in the strike signals the emergence of a new generation of climate activists and the possible development of FFF as a broader, grassroots movement, with a strong female presence and reliance on social media and peer networks. It highlights limitedcommitment to established environmental organisations, with varying interpretations of the importance of lifestyle politics and a hopeful attitude towards the future. Further research will be needed to follow the development of the first mass youth mobilization on climate change. During the second global school strike on May 24, 2019, new surveys were organized in Stockholm and Budapest.
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| 3. |
- Liu, Yu
(författare)
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Integrating life cycle assessment into simulation-based decision support
- 2022
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Licentiatavhandling (övrigt vetenskapligt/konstnärligt)abstract
- Increasing marketing and legislative requirements put heavy demands on the environmental performance of future transportation solutions. The resulting need to reduce total environmental impacts presents both challenges and opportunities to the transport sector as a whole, including the automotive industry. Life cycle assessment (LCA) is commonly used to evaluate environmental performance in the automotive industry. However, the static nature of LCAlimits its usefulness for capturing dynamic environmental consequences in the manufacturing and operational phase. This thesis proposes a simulation-based approach to LCA that addresses this problem. Selected real-world case studies demonstrate the potential of the approach in both vehicle production processes and end-user applications. The work was preceded by a comprehensive review of the potential benefits and challenges of using simulation-based LCA in production processes. This review laid the foundation for the development and implementation of this method inthe automotive industry. Two real-world case studies demonstrate its value. The first was a waste collection case study in which LCA was integrated in an existing simulation-based decision support tool to optimize the company’s activities froma life cycle environmental impact perspective. A simultaneously developed simulation-based LCA model of an iron foundry production line extended the applicability of the method with a proposed decision support interpretation approach. The study shows that data and information from both simulation model and LCA databases can be integrated and utilized in the developed simulation-based LCA method. This allows different systems with different configurations to be combined to assess the relevant parameters, and eventually to provide information about overall environmental impacts to decision makers to improvethe environmental sustainability of the automotive industry.
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| 4. |
- Lundberg, Mattias, 1985-
(författare)
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Residual stresses, fatigue and deformation in cast iron
- 2018
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Doktorsavhandling (övrigt vetenskapligt/konstnärligt)abstract
- The complex geometry of cylinder heads in heavy-duty diesel engines makes grey iron or compact graphite iron a preferred material choice due to its price, castability, thermal conductivity and damping capacity. Today’s strict emission laws have increased the demands on engine performance and engine efficiency. This means that material properties such as fatigue resistance need to be improved. Shot peening is often used to improve the fatigue resistance of components and the benefits of shot peening are associated with the induced compressive surface stresses and surface hardening. How different shot peening parameters can affect fatigue strength of grey and compact graphite iron has been investigated within the project underlying this thesis. To do this, X-ray diffraction (XRD) was utilized for residual stress measurements, scanning electron microscopy (SEM) for microstructural characterizations and mechanical fatigue testing for mechanical quantifications. The ultimate aim of this work has been to increase the fatigue resistance of cast iron by residual stress optimization.XRD measurements and SEM examinations revealed that the shot peening parameters shot size and peening intensity significantly influence residual stresses and surface deformation. Residual stress profiles, similar to the one general considered to improve the fatigue strength in steels, were obtained for both grey and compact graphite iron. Uniaxial push-pull fatigue testing on grey iron with these shot peening parameters reduced the fatigue strength with 15–20 %. The negative effect is likely related to surface damage associated with over peening and relatively high subsurface tensile residual stresses. With very gentle shot peening parameters, the uniaxial fatigue strength were unaltered from the base material but when subjected to bending fatigue an increase in fatigue strength were observed. An alternative way to increase the fatigue strength was to conduct a 30 min annealing heat treatment at 285 XC which increased the fatigue strength by almost 10 % in uniaxial loading. The improvement could be an effect of favourable precipitates forming during the annealing, which could hinder dislocation movement during fatigue.Measuring residual stresses using XRD and the sin2 -method demands accurate X-ray elastic constants (XEC) for meticulous stress analysis. The XEC referred to as 1~2s2 should therefore always be calibrated for the specific material used. The experiments conducted revealed that the XEC value is independent of the testing method used in this work. A small correction from the theoretical value should be applied when the material contains small amounts of residual stresses. The amount of residual stresses has a great impact on the XEC and thus on the stress analysis. Concluding that proper analysis of residual stresses in cast iron is not straight forward.
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| 5. |
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| 6. |
- Andreasson, Mattias, et al.
(författare)
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Project Avatar Developing a Distributed Mobile Phone Game
- 2006
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Rapport (övrigt vetenskapligt/konstnärligt)abstract
- Team Avatar, as the members of Project Avatar have come to be known by, is a group of 4th year computer science students at Uppsala University that have been developing a distributed mobile phone game during the fall of 2005. In this paper we describe the general design and environment of the result of Project Avatar - the game Three Crowns.
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| 7. |
- Arvola, Mattias, 1975-, et al.
(författare)
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Early Explorations of Interaction Design for Nature Experience
- 2007
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Ingår i: 1st international conference on Cross-Media Interaction Design, CMID 2007.
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Konferensbidrag (övrigt vetenskapligt/konstnärligt)abstract
- How can interaction design be used to advance information design, interactive services, and in the end increase the tourist attraction at nature reserves and national parks? Based on sketching, field studies and analysis of the experience of visiting nature reserves and national parks, 60 interaction design and media technology students at the advanced level have developed initial concepts and early prototypes for interactive services. Based on their design alternatives, we develop a categorization of different kinds of applications: guides, routes, events, games, installations, and websites. We finally discuss briefly the design ideas in terms of cross-platform applications, multiple platform applications, embodied multimodal experiences, user generated content, and location-based information.
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